The Commissioner of Energy and Environmental Protection may modify or suspend any requirement of sections 15-129 and 15-129a in respect to any class of vessels or vessels using any water or class of waters upon finding that such requirement does not materially aid boating safety and is unduly burdensome and inconvenient. If, however, any requirement of section 15-129 or 15-129a is a federal standard, the commissioner may not modify or suspend such requirement unless: (1) The Secretary of the United States Coast Guard has issued an exemption under 46 USC 4305 or the state of Connecticut is exempted from preemption under 33 C.F.R. § 175.5, or (2) the modification or suspension of the federal standard is necessary to meet uniquely hazardous conditions or circumstances. In the event the Secretary of the United States Coast Guard has not disapproved of a modification or suspension under 46 USC 4306, the commissioner may modify such standards under section 15-129 or section 15-129a.